I have both 1.8 & 1.4 Had 1.8 for few months and it is a good lens except one problem. Mine kept on missing focus 2~3 times out of 10... I tested its focusing ability and it was inaccurate 10-20% of the times... didn't like that so bought 1.4. Keep rate is much higher and focusing is much better. It has better build, better focusing, better weight & size, faster, and better performance at equal aperture... much better lens, worth the money imo.

Which I bought isnt a Canon lens, but I use it on a Canon.
May I play with you? For 15 euros I bought the 50mm F/1,7 from Minolta, the MD version.
With the Minolta MD-Eos adapter I can use all Minolta MD and MC lenses, which are REALLY cheap here. The adapter was 25 euros...
However, the 50mm 1,7 is sharp without adapter, but I was very supprised the IQ with adapter is sharp too! Even @ f/1,7!
With aperture ring, this lens is ideally for macro photos with extension tube (since electronic lenses are wide open when it's not fitted on the camera).

So, to all Canon users: Buy that adapter and look on eBay for that lens!

The optical quality is excellent (I would hope better than the f1.8 ) and it is a lot cheaper than the silly-money f1.2L. Also, with my 40D's APS-C sensor it gives an effective focal length of 80mm - perfect for portraits.

I have seen a couple of reviews which say that the image quality of the 1.4 is virtually indistinguishable from the 1.2 in the real world, and at 1/3 of the price!

50mm 1,2L... The quality, the sharpness, the Bokehliciousness, And the good CA Control.

This is probably just me: I prefer Canon "L" series. I dont really like the plasticly made lenses.

50mm 1,2L is not really super pricey as the 85mm 1,2L is. So I would definitely go for the 50mm 1,2L.

But I never buy my lenses in Europe... I buy them in Asia... its like 40% cheaper + tax refund

But I've already bought a 50mm, but third party. I will probably buy the 50mm 1.2L later.... not going to keep the 3rd party lenses forever!

_________________http://www.AnderssonPhoto.com Equipment: A blend of Canon, Nikon, Yashica, Leica, Voigtlander, Samyang and Sigma. All of which you can see on my website!Wishlist: Leica M 240, Summilux 50 ASPH, Summilux 24 ASPH

Got the 1.4 – basically because the 1.8 felt a bit too toy’ish and I couldn’t afford the 1.2 version.
So far, I think it’s doing an ok job for what I got it for, which is blurring out the background and for that only. Doing portraits and commercial product photos. As for an everyday walk-a-around lens- I think (the 80mm on my 7D) is a bit too long for the way I shoot. For that, I prefer my 17-55mm or the 15-85 when light isn’t an issue, by far. – And also under low light situations I prefer my 17-55mm f.2.8 over the 50mm 1.4. The 17-55mm has got IS and in my opinion- it doesn’t hunt as much on the auto focus. But all in all, the 50mm f1.4 is a great lens and it performs very well for what I’m using it for….So
On another note - Wouldn’t mind if Canon would release an upgrade to the 28mm f2.8- maybe f1.4 or a 35mm 1.4 none L.

_________________http://www.AnderssonPhoto.com Equipment: A blend of Canon, Nikon, Yashica, Leica, Voigtlander, Samyang and Sigma. All of which you can see on my website!Wishlist: Leica M 240, Summilux 50 ASPH, Summilux 24 ASPH